Lifting foil



FIG. 1 is a perspective view of a lifting foil embodying my new design, as seen from an observing position located upwardly, forward and on the port side thereof;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is an elevation view taken from the port side thereof;

FIG. 5 is an elevation view taken from the starboard side thereof;

FIG. 6 is a top plan view; and,

FIG. 7 is a bottom plan view. 

The ornamental design for a lifting foil, as shown and described. 